It also depends on the kind of RP you are looking for... Balmung has RP pretty much EVERYWHERE, going on at any time and there's tonnes of casual RP, so if that's your deal, go for it! I love to RP myself, but I like my RP to have a little more structure... being familiar with the RP group characters and having an idea of the kinds of plotlines people want to follow. However there are small RP communities in a number of places. You can check out http://ffxiv-roleplayers.com/ for any information. It's *mainly* Balmung stuff there but there are some RP communities off of Balmung and it's a good place to check.